Just hold in the slider button on the turn signal stalk until the CC-ID fault code comes up. Then google the code number, or if you have the Bentley service manual, look it up. It is a bulb fault somewhere.
http://www.e90post.com/forums/showthread.php?t=658265
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A manual transmission can be set to "comfort", "sport", and "track" modes simply by the technique and speed at which you shift it; it doesn't need "modes", modes are for manumatics that try to behave like a real 3-pedal manual transmission. If you can money-shift it, it's a manual transmission. "Yeah, but NO ONE puts an automatic trans shift knob on a manual transmission."